What do you mean? If grabbing isn't in Skyrim for consoles. It's not going to be on the PC version ether.
Why not? There isn't any strict law that says a PC must not be able to do something a console can't...afterall, PCs get to run mods. That said, I seriously doubt that feature has been overlooked, it's probably just not blatantly obvious from what we've seen of the control scheme
edit
nvm, that was some quick sleuthing