I've seen plenty of 4 bit ones and I suppose they would work although I'd rather use an 8 bit version. The FSHDMI04 could work although it's $3 on digikey (while 4 bit versions are 50 cents) and has ~20 repetitive/unused pins. It's kinda strange really, digikey has tons of single 4 bit switches and tons of dual 8 bit switches but they don't have any single 8 bit switches. Or maybe they're labeled wrong. The FSHDMI04 was labeled as a 3 x 2:1 instead of an 8 x 2:1.
I'm also looking for a 16 bit binary counter on digikey and can't find one. All the ones I've seen have 2-8 of the least significant outputs missing which sort of seems to defeat the purpose. I've settled for the CD4040BE for now.