yes... it's a very old combination from way back in dota 1.... even liquid played this combo extensively during Starladder 8.... they played it with a safelane tinker, a mid beastmaster and an offlane naix.... both beastmaster and tinker rushed BoTs, lifestealer naix-bombed into tinker, and both tp-ed on the hawk near someone.... insta 3 man gankAnother thing about beastmaster is that he's just as good as WITH a tinker as he is against him. His hawk can allow for tinker to easily chase down heroes, relocate to places if they don't have any creeps or towers nearby etc, and his whirling axes allows him to stack the ancients easily for Tinker.
I believe Fnatic did just that when Excalibur was playing for them.