I think it might depend on just how wet your stuff is before you start the drying, tbh. If it's jerky, then the greaseproof would probably do fine, same for slices of fruits. If it's mince or chilli though ....
might just be too soggy, iimmc.
You do know that you can start off the drying on a plate ? The one from inside the microwave is pretty good
If the food is very wet it might be worth drying it off a fair bit and then having a go on the greaseproof paper.
The plate will block a lot of the airflow, and that will slow things down, that's why folks recommend using the silicon sheet stuff instead.
cheers,
M