You can't HQ with it, and it will skip the mini-game and allow you to craft something in 2 seconds flat.
Quick note: You can HQ on a Hasty Hand. You have the same chance of HQ as you would any craft under Quality of 100. I do it all the time when breaking crystals into shards. Also, a full "Hasty Hand" (including reloading recipes... the fast way) takes about 45 seconds to complete a cycle. That's pretty brutal. It would be better if it auto-reloaded like Locals or if it would just let you queue up 10 synths at a time or so.