Jones, who has 68 caps for Wales, is back to fitness however and he came off the bench to impressive effect against Italy last time out and will get more game time under his belt for the Ospreys this weekend.
Provided Jones comes through that match unscathed, Howley will then have to pick his two second rows from three contenders, and Evans admits it's not a decision he'd like to have to make.
"A lot of people put a lot of doubt in Andrew's corner," said Evans.
"But the true professional he is, he came out fighting and showed what kind of qualities he has got.
"It has added to our strength in depth within the second-row. We probably did lack that at one point, and now we are looking quite healthy again in that area.
"With Alun Wyn, I don't think I need to explain that he's a quality player. He brings a lot of experience and professionalism, and his all-round game is good.
"He has got a game this weekend. If he comes through that, then it's going to be a tough call who gets that nod in that all-important game against Scotland.
"I probably wouldn't want to be the coach, there."