I have been a muzzle loader for 45+ years and much prefer the hot shot style to coventional. The caps are easily removable with hs, not all brands of caps blow apart. Side splatter is not a problem, never even heard of the concern. They, in my experience, do provide a hotter and more reliable ignition.
I knew the designer and understand the principal behind the nipple, it came from, really, rocket science. And it works.