Is this allowed?

No, as that is not intended for use on a robot. Just use grip-mat.
1517601342727_PART_1517601342640.jpg

No, as that is not intended for use on a robot. Just use grip-mat.

^That would have been a great idea, but I think the answer is no. A quick search of the rules led me to <R5b>, which states

So, that’s that.

+1.