In my experience, electrum is a far superior wallet software. Although if someone were to gain physical access to your computer, they could gain access to your funds if they also had a trezor.
Do you mind elaborating on the above?
Do I understand correctly, if I use Trezor with Electrum on my computer then there is a risk that somebody else can gain access to my funds should they be able to get hold of my computer and if they have their own Trezor?
So this would mean that just putting my Trezor in a safe is not enough, I need to lock my pc away as well?
My understanding is that you need to put your recovery seed into electrum in order for it to display your wallet. My understanding is also that if you have a trezor device, then all you need to recover your private keys is your recovery seed. Although I do not have a trezor personally so there may be an additional step required to recover access to your private keys.