the procedure doesn't hurt but healing is a cunt and in my opinion, it's not worth it at all. many people can only get a minor split too unless their tongue's veins are perfect (no tongue piercings beforehand)
but saying that, don't regret mine one bit. just if i were offered to have it again... no thanks
I wouldn't do it if I were you. If you already have tongue piercings then you won't be able to wear them and often times you have to get it cut multiple times because as it heals the cut gets shorter as though your tongue is becoming one piece again.