Been on HST for over a year now, both bulk and cut and in 16 months net results are:
FFM: +6.9 Kilo
FAT: -4.9 Kilo
overall only 2 kilo heavier, but fat% dropped from over 16% to 10%
so far I'm happy :) (although there's plenty more room to grow)
(male, 39 year old, 189 cm, 82 kilo today)