Let me take this question up one cognitive level.
In my experience, cartridge swappers are like gear swappers. They collect numerous pieces of gear - none of which they like, and they flitter back and forth between them.
Now, I realize that all hi-fi components are inherently flawed, and we frequently find ourselves in a situation of having to choose our colorations (sometimes in relation to musical genres) - especially in things analog.
Even taking this into consideration, I suggest that you practice serial monogamy, hopefully honing in (over time) on what floats your boat. You WILL find a combination that works for you, and will return to having fun with your music.
Picking the right tonearm is hard enough without imposing yet another design constraint (easily swappable cartridges).
Now, it may well be that the arm you love actually has an easy swap capability, but to narrow your search by imposing this limitation on it is putting the cart before the horse, IMHO. Worse, it becomes a self-fulfilling prophecy that you will continue to switch, and switch, and switch ...
Thom @ Galibier