the fobus ru-97 paddle works, if you go inside the waistband, uncle mikes size 15., the only lasers i've seen are the realatively bulky one that go on the rail, nothing for the grip etc. yet. try e-bay for the lasers, theier cheap there.
I had a LaserLyte (one of their brighter models) which I have now cut the mount down for the PT145. They are not up to the LaserMax, but less that 1/2 the price... certainly better than the $25 lasers on ebay. I liked the push button on/off... no cords to get in the way and the Laserlyte Quick Detachable mount fits well.