I have mountain bike wheel that has a deore dx hub on it.
its 7 speed hyperglide spaced to 130mm
I always worry about riding my bike with a 7 speed uniglide too much because when the cassette wears out ill have to buy used or dish out more than I have invested in the bike for a NOS cassette.
could I buy a shorter axle for the hub so it fits for 126 spaced dropouts and when it comes time to build another set of wheels use the dx hub?
to me it sounds like it will work,
but it seems like a simple solution to something I've been over thinking for awhile now.
any thoughts?
has anyone done this?

also I saw this video and was contemplating doing this aswell

http://m.youtube.com/watch?v=oaBQHCU9TDw