Well I finally flew a flight with the pusher.
One thing I note is that it apparently is slightly less in pitch or load (or something). Since I am flying in governor mode I assume the rpm was the same as with the normal tractor prop (which I flew just before the pusher prop). I have four indicators--one the pull was slightly less (noticed right away, it took longer to get to the 4 leaf clover (I use a "talking timer" and normally it is signaling the 5 minute mark in the first loop of the clover, but yesterday it announced the 5 minute mark before I even got downwind), my lap times were 5.2 s (normally just under 5.1s) and finally my charger only had to put just under 1500mAHr into my 4s1p 2100 2100mAHr pack. Normally the charge is midway between 1500 and 1600.
So it made it a little difficult to assess whether I had more tension in the corners or not. Flew ok and I plan to leave it on for a few more flights at least. Not sure it is a flyable day today, but if it is I'll put on my EagleTree Data recorder to get a reading.
To my eye it looks pretty identical to the tractor, but something is different.