I like the sound, the looks, and it's capable for substituting a normal size hi-hat.
But only if it's really an emergency, because it sounds much higher than a conventional size.
The situations in needing a baby hi-hat like this are variable: portability, shortage of space, recording, etc.
It's direct, trashy, fast and sharp
Cuts through anything as well.
Compared to a standard size hi-hat one will also shave more than a kilo weight off from the cymbal bag taking this to rehearsals
I got this for a minimal acoustic set up.
And with a hi-hat added, it allows me to clamp all kinds of goodies from the hi-hat stand alongside the small diameter hi-hat without too much trouble.
Will this be enough for a full gig? Probably not, but if there's no other option and the sounds engineer knows his job, the public won't even notice.
After half a year feeling this hi-hat, I find it a real stick eater b.t.w., so that might be something to consider when choosing sticks.