I have an Omron wrist B/P cuff in my gear that I use. It works pretty well and I've been happy with it. I still usually take B/P's manually when I treat people though while in clinic settings. In the field is when I tend to use the wrist one because of time, noise etc. Accuracy is of course very important, but so is consistency. If I know the equipment is reads a tad on the low or high side, but is consistent then I can adjust for that in my mind.