I've used Ronan in the 1980's. i wouldn't worry about the brush strokes. Your customers may be paying for the handmade look or else it would probably be vinyl. Haven't used the other brand you mentioned. Been out of the business for decades though. Anyway, when i had a customer that wanted hand painted lettering, they wanted the look ( and the brush strokes) they didn't like vinyl, but it was a more eclectic customer though. I hope you have good results and repor with your customer.