Here is one option, which would allow you to carry on the belt, or inside the waistband if you wanted to conceal carry.
Not the prettiest as a belt holster rig, but not as bad if ordered in Black.
In black your spending 45 bucks shipped.
I have their Crescent style for IWB carrying my M&P compact, and find it to
be very comfortable with great concealment.
Just an idea, as you say finding one for a leftie is not as easy.