Gyros - Electric vs Vacuum?

I have noticed that American Champion offers three different panel "types"
on the Super Decathlon:

No gyro instruments.

Vacuum gyro instruments.

Electric gyro instruments.

I have read that aerobatic work is extremely hard on vacuum gyro
instruments, and that for an airplane doing primarily work, the no gyro
option is preferable.

So how do electric gyro instruments fit into the equation? Are they less
susceptible to damage from aerobatics than vacuum gyro instruments? Are
there any other advantages?

I'm not particularly interested in the performance of either gyro type
instruments during aerobatic maneuvers, as I understand neither type
performs particularly well. I'm thinking in terms of an airplane that would
be used for both "ordinary" flying, where gyro instruments would be
desirable, and for aerobatics, where gyro instruments aren't particularly
important. I'd like to know if replacing gyro instruments would be a once a
week operation under these flight circumstances.

What I'm primarily interested in is what sort of reduction you would see in
the service life of gyro instruments, and if there is a vastly different
reduction between vacuum and electric instruments.

Would it be possible to increase the service life of electric gyros by
powering them down and letting them spin down before beginning aerobatic
maneuvers? Would it be legal?