I will still have my vacuum driven AH and the dynon as a backupAs someone who has experienced an EFIS roll inverted just 50 feet AGL on a zero zero takeoff, I would remove the VSI. In my situation, I pegged airspeed where I knew I would be climbing and crossreferenced with the DG so I knew I was not turning. Maybe you have an alternate DG such as on a 496?
...PS. Having 2 sets of instruments from seperate sources gives me a great deal of added comfort up there!
John Morgan