I received a TMB Planetary 2.5mm clone this week and got to try it out in a suburban park tonight. One look at the moon eased some worries I had about the eyepiece providing too much power. At 360x, the eyepiece provides 3x/mm or 76x/inch. I concentrated on Posidonius and its rille structure. I had applied felt in advance, so there was no flooding of the field of view from reflections off the eyepiece tube sides.
There was little turbulence, and while 100x showed much better contrast, at 360x, the contrast was still fine on the moon, and the scope (a 120mm, f7.5 ED doublet) focused easily. I was impressed. I was also happy to split Sirius easily at 280x, and Alnitak at 40x (22mm LVW) at the edge of the field (something called M42 lay in the middle of the field). E and F stars of the Trapezium were easy at 100x.
I did a bit of comparing between the ortho 7mm in an Ultima Barlow and my 3.2 TMB Planetary clone. On the moon, the ortho was not noticeably better. I'm still waiting to get some good views of the planets.