I tried 2.2 today and here is what I found:
Loaded easily a bit sluggish at first but test very fast after a min or two.
Downloaded 1.25 kernel but it only ran 1100 not 1.25 as advertised.
Wifi Tether did not work and this is why I returned to BB 1.1 I needed the tethering.
Other than that I really hardly noticed any major improvement over BB 1.1, nut when it comes out with 2.2 I will switch.
Keep those ROMs coming!