Hold the lever while you close the gun?!

What on earth for?

The reason that snap-actions took over from inert actions in the 1870s is because they were easier and faster to operate - because you did not have to mess around with the lever when closing it.

If you like manually operating a lever, you'd like my Jones underlever-operated Thompson and my Adams inert push-forward underlever by Robert Adams. These require manipulation of the lever on closing because they lack a spring to return it for you.

Still, if it makes you happy it's OK. Some people put plastic covers on leather car seats.No need for it but up to them I guess.