For depth cutting sliding miter saws vs chop saw which one is better for this creates confusion to do with capacity or depth of cut.
Most of the metal chop saw deal with angle cutting short pieces of metal that are 4 inch or more smaller.
Rather of wood if you need to cut a large piece of metal (the object one size bigger and second short),
for that, you may understand about a sliding miter saw which could offer a perfect solution.
Otherwise, if you follow the large piece in the industry of wood or metal best bandsaw for metal cutting is the right choice.
If you use a separate metal cutting saw make the job much more safe environment and easy for you when making the longer cut.