really? All you have to do is stretch your wrists a few times a day for a week or so and you should be good. Back in highschool when i discovered cleans and front squats i realized i would never be able to do them properly without alot of wrist flexibilty…so i just sat at my desk and stretched both extensors and flexors throughout class.
Within a week or two i was able to get my whole hand under the bar comfortably, so you should be able to get at least 1 finger under there no problem with a bit of dedication. IMO it is much more secure than the crossed arm variation and i believe it helps keep the elbows and thus your back upright.