First off a matter of semantics. What you are talking about is altering the grind of the knife, not its profile. Profile refers to how the knife looks from the side...what you would have to cut out of sheet stock if you were making it from scratch.
There are a number of problems with doing what you suggest. First, if the steel is worth fooling with, there probably won't be all that much of a hardness difference between the blade and a file, so it will be hard going. It is sertainly do-able, but not a lot of fun. Secondly, if it is a high hollow grind you may not have enough metal to make a neat job of it...you may end up with the correct scandi bevel, but still have some hollow showing. I don't see that this would me a problem, but it would look odd.
None of this will hurt the blade. The only way to really damage a blade is to get it too hot, this will soften it a little, rather like an extension of tempering, but you need to be getting to around 170degC to start worrying about that, easier to do with a grinder than a file. Scratches may look bad but things like that can be sanded out and won't hurt the performance of the blade unduely, just how it looks.
What is the knife that you are looking at? What stock thickness and steel type? Some steels aren't going to work with a file at all, others will be (relatively) easier.
