I was fortunate enough to be one of the folks who beta-tested the KRG folder for the TRG -- though mine was for a TRG-22.
I also have the folding Sako, so could do an apples-to-apples comparison.
As Stanwood above says... just order one. You will not be disappointed.
Also, though I had to return the 'beta' version to Justin after testing it out, I was so happy with the stock and chassis that I ordered one to do a special build on a Tikka T3. Just got it a couple of weeks ago.
Last, order the magazine release extension. Fantastic enhancement to the TRG.
Can't say enough good things about the KRG system.