As far as I know, there is no problem with either. I personally do both just for good measure.
EDIT: And you know what, further to that; you (and me and others) are the one going to the trouble of posting and sharing the comps, so therefore I reckon you can post them however the heck you like. :)
Hmm, not sure if I should put my referral link here or in the above text - please let me know if there is a preferred etiquette
My referral link https://wn.nr/8UXFf7