I have not used it yet but it seems to me like a cost effective option to that of clay especially since if you drop it on the ground you can still use it. as for lubricants.... I believe they say any lubricant can be used but I would not take my word for it.
Been using the Autoscrub for a little while now with the Nano Glide lubricant. Overall I'm extremely happy with it and the results achieved. It's a great time saver versus claying and is also more cost effective. This weekend I ran out of the Glide and used Adam's Detail Spray and it worked fine.
I'm using the Autoscrub on every detail since I can get a vehicle completed in 15-25 minutes as opposed to 45-60 minutes with a clay bar. But I still have to bring out the clay bar for those hard to reach areas. Plus AF Iron Out is also a huge help as well in cutting down my overall time. As far as using it less frequent on a vehicle before using it again just depends on the condition of the paint between each cleaning. But honestly, I love how easy it works so I would have no issues busting it out every time I wanted to remove any contaminants.
Looking forward to getting my hands on one, should be ordering next week. Thanks for the great feedback guys appreciate it.