I was thinking back, and couldn't recall a problem with the non-swivel types, why would you buy a bunch of swivel connectors if you didn't need all that swiveling? Not bitching, just wonderin'?
And the swivel should have been on the "male" from the beginning, I see it is now, or am I imagining that option? I just ran the male to the Ti wand 2" tube, it slid fairly easy enough with the hard plastic on the metal.
I did notice all the 2.5" males I got in had elec. tape on them, I assume for a better seal? Since you don't need very many 2.5" cuffs the swivel isn't really that big of a deal.