Re the blade itself:

Rather too big for my taste, but it otherwise it looks fine from the photos.

(My opinion: I think you can get a 12" Ontario machete for about $30-ish shipped that will do the same jobs and a great deal more. But hey, it's your money.)

Re serrations:

I use blades with serrations a lot. Daily. Fibrous plant materials, heavy plastic materials, etc. With the right pattern (a simple scallop IMO) they work very well. And are indeed a pain to sharpen, but that's not an impossible task.

The bad news is, the serrations on the blade in question are in the wrong place. (This is hardly news.) Serrations are most practical in the middle of the blade. But that looks weird, so they are never placed there. Visual aesthetics trumps practicality. Argh!

The good news is, the serrations on the blade in question are a simple scallop design and not placed too close together. So, in the field, you can do rough sharpening and get a workable edge, including the serrated section. Back home, you will use a chain saw file (or round diamond file) to clean up the rough bits on the serrated part. So IMO there's no loss of useful edge. Kudos to the manufacturer on this.

My 2c.