I've been on the fence about strobes, but in the case of HDS lights I think its done right.
First and foremost they need to stay out of the way unless they are needed, not a problem with the programmable HDS. Strobe modes being in the way with no option to disable them is surely the reason that they are so commonly hated.
Zebralight also hides their strobe away nicely.
Emergency strobe (slow), "tactical" strobe (fast), and even SOS are plenty useful if the need for them ever arises.
I tested HDS' tactical strobe on myself. When shining into my eyes on high in a dark room while facing a mirror my eyes rapidly adjusted to where I could see myself in the mirror. With the rapid strobe however it was impossible for my eyes to adjust, alternately too bright and too dark to see, and the sensation of my pupils trying to keep up with dilating and contracting in time to the strobe was quite uncomfortable.
In contrast when I'm shining it properly Away from my face, the rapid strobe is sufficiently fast to give me a good view of whatever I'm lighting up.
I find it a very useful, very obnoxious, and aggressive feature, so long as it isn't activated accidentally.