One of the first buyers in the US has actually used the 7mm:
http://www.cloudynights.com/topic/50.../#entry6699605
Quoted from the above link:
"My new 7mm Delite is definitely an upgrade from the Radian series optically and functionally. The Delos-style eyecups are much better than the old click stops of the Radians. The optics are pretty impressive right to the edge (actually a stunning sharp clean edge) and the on axis sharpness, contrast and clarity appeared slightly better than my 7mm BGO on the Moon. I was actually quite impressed with the lunar images of the new 7mm DeLite against my BGO 7mm. On Saturn it was too close to call last night, the light scatter and transmission appeared identical while detecting Saturn’s moons, but the much larger field of view of the DeLite is very appealing.
It was only one 3 hour observing session with my AP155EDT, so I’m looking forward to more time to enjoy this 7mm DeLite. My initial impressions are quite good and I plan to purchase any DeLites available <10mm focal lengths. I would even replace my current Radians with DeLites if their focal lengths become available. The DeLites are indeed a worthy upgrade both optically and functionally.
My old 7mm T1 Nagler is officially retired from filling the gap in my Radian eyepiece set."