Brian,
I have a very good wood band saw (INCA) and an inexpensive (e.g. not-Hegner) variable speed scroll saw. I only use the INCA for wood because it is too fast for metal but for (what I purchased it for) resizing hardwood stock – it is very good indeed. My cheapie scroll saw wouldn't cut 1/2" steel plate (I don't think, but I've never tried it) mentioned elsewhere recently but it can handle small, thin brass parts quite comfortably. However, for simple cuts on larger pieces, it's not the tool I would first think of using. For larger metal sheets it would either be my 'nibbler' or my variable speed jigsaw (with a good metal cutting blade). For thick (heavy) cuts, I have a power hacksaw but this is clearly not much use for cutting large metal sheets.
Again, whilst I do not own a 'metal' cutting band saw myself, I do know that many people swear by theirs and there are many examples on YouTube where you can see people 'roughing' out and/or contouring metal plate with their band saw. However, for smaller (and thinner) work, I think a scroll saw would be a better, safer bet, provided the work will fit within the saws throat. Mine may not be a Hegner but it cuts both wood and metal with a good degree of accuracy and does it much faster than I can do it with a fretsaw.
As always with these questions, the 'context' of the work involved is an essential part of the information required to get a useful answer back. My methods & tools would probably not be too useful to anymore restoring motorbikes or building 6" traction engines… but they do seem to suit the smaller sale work that I generally do.
Regards,
IanT