I also have some of these. I love them. They can be fast if you know how to use em. Though I’d say, there is a leaning curve.
Because some of us blue collar infrastructure pussies like a warm leftover meal once and a while, lol. Especially this time of year.
I mean, that’s just my guess. 
I get my fiskars micro-tips from local hardware stores. I’ve found some others too.
Everyone keeps talking up Chikamasa or whatever. Y’all trying to convert me?
Might have to give these a try. 