It wasn’t my MT12 and only had some brief first impressions on it an year ago. But I think my ergonomics issues were kinda like the GT2B ones. Maybe with wheel delete I wouldn’t have them, not sure.
I actually don’t like the ergonomics of the GT2B either. GT2E I find way more comfortable.
The wheel itself doesn’t get in the way on that but the plastic around the wheel does and it’s very bad for right hand.
Also, both for left hand and right hand, my finger hits the plastic there as well:
Both solved in the GT2E:
The first issue isn’t there due to the wheel housing being recessed, the second issue isn’t there because the trigger sticks out further thus my finger doesn’t actually hit the housing at all. Also the B has shorter brake travel with stronger brake spring. The E has longer brake travel with the same stiffness spring as throttle travel on either. The E just feels better in hand.