I used a Wolff guide rod with their non-captive springs in my G22's for a long time. Now that I mainly shoot the G19, I haven't set them up the same way... yet. So far, the stock recoil spring is fine. We'll see.
Btw, the advantage of the non-captive spring for the G22/23 & .357 Glocks is that the standard spring wt (17-18 # i think) is too light, and you can go to a heavier spring easily, or vary the wt as needed. MarkCO, a GlockTalk moderator and forensic engineer, has extensively tested this, and finds that the 20-22 lb springs give better results in the .40 Glocks. Less frame battering, etc. I used the 20 and 22# both and they worked great, with full-power loads. FWIW.