I say jump in head first and get your slide milled. I like using all black suppressor sights because I don't have anything bright of the front of the gun to distract me from the dot. If I have to use them, I'll still be able to see them clearly in daylight, and in any other lighting they'll be silhouetted by my WML or handheld. I'm a fan of the RM06. I can dim the dot down for target shooting if I want and get it looking almost like a 2moa. I can also turn it up and get it to bloom a little bigger, though I find the brightness annoying sometimes. Hasn't been an issue though because I find the dot size to be perfect anyway. After practicing your presentation a bunch you won't even have to "pick up" the dot, it's just there.
Haven't used a Balor so can't say anything about them, but if you were thinking about it as a non permanent way to test a RDS on your pistol, I'd still say get it milled. I can almost promise you'll love it, and if you don't, you can easily sell your milled slide, probably even with the RMR it was milled for.