Oh, no not competition guns, just spec that you want a carry gun. SVI has a TX Ranger as a customer (they build his duty guns, and his competition guns - he married well.), and they've made the guns for bodyguards for monarchs, etc.
Benny built mine to carry, as well as competition. (Mine was right at 3, hard chromed w. 6 Tripp mags, last year.)
Akai also will build a carry gun, TMK.
As far as warranties... If its not right, I have no doubt it will be taken care of, but I'd be very surprised if its not right. I don't think any of them have a formal warranty policy, simply because they mostly build custom competition guns - even S&W will squawk if you fire enough rounds.
If a custom competition builder builds a screwed up gun, his reputation is imperiled. If its not remedied right away, it might be destroyed.
The only "issue" with any of those builders, is that Benny will NOT build a pretty gun. He cannot stand the idea of it. My single-stack is quite lovely. Clean lines, very well, done, and shoots like an absolute dream - and it has a slight chatter mark on the radius of the grip safety, which I am 99% certain was left there deliberately, because Benny builds "working" guns.
Also, Benny only builds carbon steel guns, which I happen to agree with.
Where are you located? For some reason, I think you are in FL - if you are, so is Akai.
True custom guns get addictive, and being local can be quite useful, when you start wanting to "tweak" your original design, and a local builder means giving him money in lieu of FedEx.
SVI builds the prettiest guns.