No; it's not.
I believe that there has been some debate over this issue in the past but in the end you must use the actual cards in sanctioned tournes.
However, if it is unsanctioned but no-proxy (seems like an oxymroron, but w/e) then you could probably do this with the discretion of the TO or whoever is judging, though.
Thanks for the swift reply
Seems I will be playing only in non-sanctioned tourneys then
