As far as I can tell, the biggest "benefit" of DRM is making it impossible to create a reliable KVM. It's possible that my problems stem from an incompetent manufacturer - I haven't taken a protocol analyzer to the wretched thing - but my POS 2-monitor, 4-computer HDMI KVM regularly drops one or other of the two monitors when I switch computers; it also routinely drops the USB keyboard from one of the computers while I'm using it, without me switching comps. I never saw anything remotely like this with a succession of DVI KVMs, leading me to guess that the most likely root cause is HDMI complexity.