I suppose you could cycle on and off it.
I don’t think these drugs would give you as many complications as the antiaromatase drugs such as armidex or femara - as far as changing your blood lipid profiles.
The benifits like all compounds that “naturally increase your endogenous test production” would be self-limiting as, once test became too high (above your bodies natural physiological level) the body would re-correct itself I’m sure, and the drug - either clomid or nolvadex would have limited effect past this.
These drugs do not block or have the same effect on all estrogen receptors in the body. As I recall Nolva is completely safe to take as therapy for breast cancer, because it has effect at the breast, but in other areas of the body it helps to stimulate rather than decrease function - I have in mind Osteoporosis in females as an example - a low level of estrogen in the body as seen in postmenopausal woman contributes to a reduction in bone remodeling vs osteoclastic destruction of bone/ reduced calcium retention which leads to a drop in bone mass and bone strength. Taking antiaromatase inhibitors can have similar effect, however nolvadex does not have this effect on the body, or on blood lipid profiles. Actually I believe nolvadex users in studies have experienced a lowered risk of osteoporosis.
Both studies of long term Nolva and Clomid use have confirmed an irreversable loss in vision acquity however.
I think cycling nolva, or clomid would be a good option for the natural bodybuilder as it would give him optimal levels of test - simmilar in effect to tribex.