I've just tested with a Trezor test seed that I use, and 2 different passphrases using Electrum v2.9.3... and both times it is generated the same addresses as the Trezor wallet with that seed and those passphrases
1) What Kind of Wallet do you want to create? "Standard Wallet"
2) I already have a seed.
3) I enter the 24 word seed, select advanced options and tick both boxes ("Extend this seed with custom words" and "BIP39 Seed")
4) I then enter my passphrase in the "Seed Extension" dialog box.
5) It will prompt for Derivation Path... Leave as m/44'/0'/0'
6) It generates addresses which will be the same ones as your Trezor.