Also it's very awesome for newbies? ex wizzies . Free phen in armor while keeping berz for fast cast!
edit : maybe for even combo champs , maybe. Just off the top of my head.
The only way you can interrupt a combo is by 1) absorbing spirits, 2) backsliding out of the combo (not 100% sure since no sin has even tried that), and that's about it. Asura Strike at the end of the combo is un-interuptable, unless the Champ spams the button - that cancels the skill.
If you mean it's good for casting HSS since you don't really stack dex in a good combo build, then MAYBE then, but most of the time, if I'm in a PURE combo build where I know I can get interrupted, I'll just use Summon Spheres which can't be interrupted.