i agree thay are more fragile, quite a bit more fragile if you are not good at it,but you can manapulate them quite easily. i have had bees my self for over a year yes. but in this year i have helped with and inspected hundreds of hives and i do mean hundreds. i have 1 friend that runs 300 plus that i help regulary. i find it easier to manapulate the tbh due to the fact that i dont have a few honey supers and a few brood supers to mess with. my point was simply that some people find a tbh is easier to work "manapulate" than a lang.If you plan to be doing any type of manipulation with the hive then you take the risk of the comb coming off the frames.