Upload & Sell: On
I think it is a pretty good idea to DIY a lens cover, if one desires to provide some protection for the lens finish, with a minimum expenditure of time and money.
However, I do not see why one must use a camo patterned neoprene ? A solid/subdued colour of some sort with no pattern would probably look aesthetically most pleasing and it would not draw as much attention as camo covers do.
However, if I wanted to draw attention to my "big guns", I'd rather do it with a Scottish tartan of some sort than with a camo pattern.