^^^ Good answer up there; the Cleveland wedges are great clubs but many players know their current setup perfectly and therefore take the approach of "if it ain't broke, why fix it".
From a personal standpoint, I found that the shorter cleveland wedges gave literally too much spin. It's much easier to hole out from 75yrds and lower by applying top spin to your short wedges and knowing that you'll get a short, gentle roll out. When using the clevelands, on some approaches it can be near impossible to extract real forward movement so you then have to judge backspin to try to hole out which IMO is much, much harder.
The flip-side to the clevelands is that they offer more options out of the rough, particularly around the greens. As Romesco said, go out there and practice with your clubs. Get used to what you can do with them and make sure you practice all the shot types which are available. Many players rely too heavily on certain shots around the green where in reality there are better options available, particularly if you want to increase your chances of holing out.
Happy hittin' on the frosty short stuff over Christmas one and all.