When I inquired in August, the wait time was 20 weeks.
I personally have no "customer service" complaints about Mitch Rosen. The holster, mag pouch, and belt I bought last year were very nicely done, and the products were shipped exactly when I was told they would be shipped.
On the other hand, I can't imagine anyone beating Lou Alessi in the customer service department. Dealing with Lou Alessi is pretty much a low risk proposition because not only are his products good, he's a pleasure to do business with. If you are not satisfied with his products, he will do whatever he can to make it right.