Gonna go out on a limb here.
No negatives, if there are you are doing it wrong.
Seriously, if you are wfp and you want to go back to ladders, or you think how wonderful using ladders was there is something wrong. Sure there are more overheads, and you need to know what you are doing, but using wfp outweighs all of that, by a MILE.
Next best thing to using wfp is going hot, as it's much faster.
Any objections to that and I'm happy to answer your views.