Just as a FYI I wandered up the gliding club and spoke to a few people today. There is a lot of interest in this subject.
Current polling round indicates that the 10% of our cross-country fleet which is transponder equipped are all looking at getting them ADSB enabled.
Of the rest about 15-20% of the owners who fly cross country have already ordered SE2's or are trying to do so, while another 15-20% are thinking about it, so my guess is that by next spring we will be 30% to 50% ADSB-out equipped as far as cross-country flying goes. There is some delay/prevarication because of the Brize/Oxford changes which may reluctantly force some into (expensive) transponder installations.
About 20% of the XC pilots have PowerFlarm with ADSB-in already, and there is also quite a bit of interest in Rosetta-FX as a way of receiving ADSB without an expensive Flarm upgrade - we're all waiting for more details!
What we do about club/training gliders is being considered by the committee.
(Of course all of the gliders on site, private and club , already have Classic Flarm or Power Flarm, apart from a couple of vintage types)
So if you have a PAW or an SE2/SD combo you should see every glider we have on site one way or another, (bar about 3 vintage gliders that mainly just do circuits).
PS: Despite this I'd respectfully suggest not routing within 1nm of a glider field at their circuit height, this is not a great plan as a couple of Airprox's near Lasham recently demonstrated!
PPS we have around 50 gliders on site, of which 30 or so regularly fly cross-country.