I'm always gentle with my mantises too, scooping them up instead of grabbing them because I'm afraid to hurt them.
Well today my adult limbata was hungry for human or something.... She's 2 weeks adult so I thought I'd have her bred today. Fed her well last night. Took her out of the cup and she grabbed my forefinger and dug the spikes from her raptors into my skin. Ouch! It really hurt, and she wouldn't let go. I tried to 'gently' remove her forearms. Then I saw her black and green mouth open and start chewing on my skin!
I finally got her to give my finger back, and noticed she drew blood. She was crawling on my arm at this point, I figured why would she bite my arm right? Then she dug her raptors into my arm and gave me a really good bite again! Bleeding in that spot now.
So... I'm going to be extra careful when handling this girl. Might even have to put on a pair of gloves before handling her again...... ow