The way that Rigo (or one of his team) talk on twitter, they are confident.

People that Rigo has fought that probably belong in Featherweight are Garcia, Teon Kennedy, Jazza Dickens
Rigo either couldn't put them away quickly or at all, so he's go to be looking at dancing for twelve and counterpunching, not letting himself be caught on the ropes or in corners
Bodyshots and headshots from distance, but Rigo is good on the inside as well

Rigo doesn't telegraph punches as much as others, i.e. the glove moves from its position instead of a backward movement first.

Loma has to be discouraged quickly, otherwise as you say, he'll just march forward for 12 rounds moving from side to side swarming Rigo, cutting him down.