What evidence do we have that Blind Bartimaeus approached Jesus naked?

In Mark 10:46-52, we have the story of Blind Bartimaeus Receives His Sight >So they called to the blind man, “Cheer up! On your feet! He’s calling you.” 50 Throwing his cloak aside, he jumped to his feet and came to Jesus. I've seen some treatments of the story that claim Bartimaeus would have been so poor as to possess *nothing* but a mat and a cloak, so would have come to Jesus naked. Thus, extra theological meanings are drawn about coming without any works or individual merits, the scandal of free grace etc. A google image search turns up many inspiring depictions of the event from historical paintings or woodcuts, but none hint at nakedness. But many hardly depict a desperately poor person who's thrown off anything. What evidence do we have for this? What prominent theologians have made this claim?