Well, the first 30 hits from Google agree with you for scantily. They are all scantily clad or scantily dressed --mainly women, but also two for men, and one for a little boy.

The results for scanty are skewed by the presence of two pop groups Scanty Sandwich and The Scanty. However I did find this gem about a cactus: This wood has scanty paratracheal parenchyma. I'm surprised this example didn't immediately spring to mind.

Scant on the other hand seems to occur with lots of different nouns: reward, hope, prospects, salary, regard, respect, growth, progress, evidence.

Bingley

Bingley