I don't think you've quite grasped the point I was making, but let me agree with you on some things...
You are saying is that it's the physical injuries that have kept him out of the team - and I agree with that 100%. You're also raising doubts about his fitness levels and whether he can stay fit enough to make a positive impact on the team - and I think that's something none of us, not even Ched himself, know the answer to - and that for me is "the risk" in this signing. However...
You're then suggesting he's got a track record of being injury prone. In the three seasons he played for us before going down, the least number of games he played was 35. I don't think that's bad or unusual tbh. In fact he played 35, 36 and 42 games for us in those three seasons. We're not talking Laurent D' Jaffo or Jon Ebrell here. We're talking about a player who will play the majority of games of in a season, so I think you are being a bit unfair painting him as some kind of crock who has always been injury prone and using that to support your argument. And the comparison to James Wallace just shows that you've got a very negative view about Evans, not based on any facts.
I think it's not surprising that after a long time out of the game he hasn't managed so many games this season. I think it's a small miracle he's kept himself fit enough to even be under consideration for a career in football ever again.
When you say, "Evans has shown no signs of mental strain" - I wonder what you are basing that on and how you are qualified to know such information? I believe that he has been through some serious mental trauma because of what has happened to him and has doubted whether he will ever be able to play football again.
He needs to be physically fit - of course. And he needs to be mentally fit too - and have support from our fans.