This is my third season with mine.  I love them.  At first they were different than my previous pair so I wasn't sure...  Once I broke them in they have been plenty comfortable and durable. 

All the soles and heels that come at no extra cost is also a real plus!

I'm pretty sure that they're made by the same company who makes the 3G shoes, so the quality is going to be very good. Mine are very comfortable, and they feel better with age. Also, most of the soles included in the bag are leather soles, not the cheaper microfiber like you see with other manufacturers.

I think you are correct, they have the same two ovaled holes in the section between the replaceable heel and soles as the 3G Sport/Tour Ultras have. Couple guys locally have them and seem to like them. I really liked the high end Brunswick shoes KR made, which are now EBI/Hammer shoes, but in general, it's just nice to have shoe options again outside of just Dexter.