How to use a PKCS#15 with GnuPG?

[NdK]

Hello all.

I'm trying to use an ePass2003 token (and possibly some Aventra MyID
cards) to have my keys around when I need 'em (especially for
authentication and signing). Both ePass2003 and MyID implement PKCS#15,
so IIUC they should be usable.
Too bad I can't find the needed infos...

I generated some test keys on the token (ssh one is imported, for
another test):
$ pkcs15-tool -D
Using reader with a card: Feitian ePass2003 00 00
PKCS#15 Card [NdK-test]:
	Version        : 0
	Serial number  : 0843420916091101
	Manufacturer ID: EnterSafe
	Last update    : 20170615092227Z
	Flags          : EID compliant

PIN [User PIN]
	Object Flags   : [0x3], private, modifiable
	ID             : 01
	Flags          : [0x32], local, initialized, needs-padding
	Length         : min_len:4, max_len:16, stored_len:16
	Pad char       : 0x00
	Reference      : 1 (0x01)
	Type           : ascii-numeric
	Path           : 3f005015

Private RSA Key [SSH key]
	Object Flags   : [0x3], private, modifiable
	Usage          : [0x4], sign
	Access Flags   : [0xD], sensitive, alwaysSensitive, neverExtract
	ModLength      : 1024
	Key ref        : 0 (0x0)
	Native         : yes
	Path           : 3f0050152900
	Auth ID        : 01
	ID             : f3dcf75d07c02fd15ae7b7a335f84d46eda6049d
	MD:guid        : {323ba8f2-2b93-1900-fa3b-e1b4d2024011}
	  :cmap flags  : 0x0
	  :sign        : 0
	  :key-exchange: 0

Private RSA Key [Signature key]
	Object Flags   : [0x3], private, modifiable
	Usage          : [0xC], sign, signRecover
	Access Flags   : [0x1D], sensitive, alwaysSensitive, neverExtract, local
	ModLength      : 2048
	Key ref        : 1 (0x1)
	Native         : yes
	Path           : 3f0050152901
	Auth ID        : 01
	ID             : 9e67a012e0e45f3ae9b1398b912bbf2ba1aef2d4
	MD:guid        : {6c1033ed-c1df-5baa-4e87-5be41c0a8b03}
	  :cmap flags  : 0x0
	  :sign        : 0
	  :key-exchange: 0

Private RSA Key [Decryption key]
	Object Flags   : [0x3], private, modifiable
	Usage          : [0x22], decrypt, unwrap
	Access Flags   : [0x1D], sensitive, alwaysSensitive, neverExtract, local
	ModLength      : 2048
	Key ref        : 2 (0x2)
	Native         : yes
	Path           : 3f0050152902
	Auth ID        : 01
	ID             : 7db41d5b2c07355dd361e0bffd543c0cfc51953b
	MD:guid        : {08884d6f-15a7-1ade-7183-04d4a4e6bc6f}
	  :cmap flags  : 0x0
	  :sign        : 0
	  :key-exchange: 0

Public RSA Key [SSH key]
	Object Flags   : [0x2], modifiable
	Usage          : [0x40], verify
	Access Flags   : [0x0]
	ModLength      : 1024
	Key ref        : 0 (0x0)
	Native         : no
	Path           : 3f0050153000
	ID             : f3dcf75d07c02fd15ae7b7a335f84d46eda6049d

Public RSA Key [Signature key]
	Object Flags   : [0x2], modifiable
	Usage          : [0xC0], verify, verifyRecover
	Access Flags   : [0x0]
	ModLength      : 2048
	Key ref        : 0 (0x0)
	Native         : no
	Path           : 3f0050153001
	ID             : 9e67a012e0e45f3ae9b1398b912bbf2ba1aef2d4

Public RSA Key [Decryption key]
	Object Flags   : [0x2], modifiable
	Usage          : [0x11], encrypt, wrap
	Access Flags   : [0x0]
	ModLength      : 2048
	Key ref        : 0 (0x0)
	Native         : no
	Path           : 3f0050153002
	ID             : 7db41d5b2c07355dd361e0bffd543c0cfc51953b

$ gpg2 --version
gpg (GnuPG) 2.1.11
libgcrypt 1.6.5
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2

But:
$ gpg2 --card-edit

gpg: OpenPGP card not available: Not supported

gpg/card>

Well, actually it's not completely unexpected, but then I don't
understand why scdaemon is now locking my token, if it doesn't know how
to handle it:
$ pkcs15-tool -D
Using reader with a card: Feitian ePass2003 00 00
Failed to connect to card: Reader in use by another application

What am I missing?

Tks,
 Diego