bulking/bloating drugs are ussually the BEST cutting drugs as they tend to exhibit heavy androgenic properties (best state for preserving muscle mass while in caloric deficit), for the most part bloating is easily controlled with aromatise inhibitors, with exception for anadrol and high doses of deca
so to answere your question, yes, endomorphs should definetly use "bulking" drugs, i beleave every cycle should be testosterone based, if you tend to gain fat easily you just have to pay much closer attention to your diet, do cardio, and really tighten up your estrogen-control component of the cycle