Replying to Ski Bag that fits all?

I'm taking a Greyhound bus for a trip over new year, I guess you can't take skis on without them in a bag. So does anyone have advice on what bag to get, like is there one which would fit your boots too? (Otherwise I'd take my boots in my carry on, to avoid second baggage charge). I'd like to fit most my clothes in too.

I was looking at board bags and they seem to be cheaper, and bigger for clothes. My skis are 159cm so I reckon I could get a board bag long enough. Does anyone know any reason why I shouldn't go in that direction?

I'm kind of annoyed about having to buy one; I've never needed one before.. So, yeah, I'm definitely price sensitive.