I had a set some time ago , for gettin to the backs of hard access custys , through the house jobs and the like , never felt safe on them , and i am 10 st !
If you are a hefty chap then i would say no , dont get me wrong they are handy for the odd occasion but not day in day out use , saying that mine were £100 and i know some are 200 plus , so quality could be a factor .
Rich P @ F