The African Mantises are docile as nymphs. They never once jumped away from me or got so startled that they scurried some place really quickly. The only close call I had was when Meek jumped and landed on the floor when he was just a tiny L1 or L2 nymph. I was very frightened about not finding him, but fortunately I did. He's a nice and strong healthy L5 now.
Comparatively, the Giant Asians are much faster as nymphs and very flighty. They love to jump, so if you do get these be very careful. At the same time, sometimes this flightyness makes it easy to put them back in their enclosure after feeding time - a lot of times they will get out, but don't worry, just guide them onto your finger and keep an eye on them. Then just place the enclosure directly in front of the mantis and poke it in the butt, it'll leap forward and into the enclosure a safe distance from the top - Always watch that your mantises are clear from the entry way when you shut the lid! This will kill or seriously injure them if care is not exercised! Fortunately, I haven't run across any disasters like this, but sometimes I get the occasional, "HEY, that was my foot!
" look from my mantises - in which case I just let them out and try again when they calm down again.
The African mantises can get so docile they might not want to leave your finger! If you have to put them in the enclosure, it takes some time, but you gotta let them get relaxed before attempting... then place the enclosure directly in front and startle the mantis into scurrying forward safely into the enclosure - just poke it on the butt. Sometimes they'll also just be trying to reach out beyond your finger, just let them grab a piece of paper towel or whatever you have in there and they'll crawl right in there!
I have only fed my mantises fruit flies for the most part. First, it's fun to feed them the flies one by one, watch them catch it and enjoy it, and give them seconds! Sometimes I do pinhead crickets and houseflies when available, but I always exercise caution - I am paranoid of overfeeding them