Ah to switch or not to switch, that is the question!
+1 for "twist 'n' tape" - I've done it on everything from J to O flights never had a problem, no soldering, no drilling holes, cheap - did I say cheap?
BUT, I also use DIP switches (in one rocket) and they are great - with a 4 way DIP you can use two switches for one altimeter, two contact points doesn't matter if one fails. Tiny foot-print AND they are cheap!