For the axis adex/letro can defenitely be used PCT. They show the same effect as nolva/clomid.
But i don't see a reason to combine an AI with an anti-estrogen.
Same reason as why i don't see any reason at all to combine nolva and clomid.
Like is said, all 4 increase LH, FSH and testosterone levels.
There's only 1 thing about AI's: They will hardly prevent gyno, and show little value in the treatment of gyno.