I'm currently running one to try it out in a campaign. Low-magic campaign, human, picked up fast learner and improvisation. Gave him an armored kilt and I'm having him masquerade as a bard. It's fun (although that may be because I decided to run with the kilt and make him play the bagpipes and speak with a terrible Scottish accent) although I'm aware that parts of it are sub-optimal. I play him as an infiltrator type, managed to get my hands on a hat of disguise to go along with it.
Unfortunately, I think a lot of the reason he works for me is campaign specific. Low magic world (personal rule, when there isn't a lot of casters, never look like a caster) and the party is currently working with a group to try and free a colony from an imperialistic faction do basic dictator-ish dick moves to it's people. In a more combat focused campaign he'd likely be less useful, but as it stands, he blends in, gathers information, charms or lies the party through whatever needs to be gotten through fairly effectively.
Would I play it again? If I was put in a similar style campaign I might, but probably not.