“what if I told you that such a head lamp existed”

I don’t see the Vizion as a good match. It seems OM wanted:

“Regulated so it can use lithium batteries, so I don't have to carry extras along and so it doesn't dim out until the batteries are almost gone.”

Vizion is not fully regulated so it will probably dim as the batteries dim (very typical of 3 AAA lights).

“Three light levels, bright (night hiking), medium (in camp, cooking or washing dishes), low (reading in tent). The strobe for emergency signaling is nice, too.”

Vizion appears to have ‘high’ and ‘low’ mode only. The absent strobe feature will capture a larger audience (like me when biking).

The Vizion boasts “Design transfers heat back into batteries”. Well most designs do this anyway. That’s why headlamps and flashlights feel warm (at least the high power ones). That will keep batteries warm anyhow.

Battery life is advertised at ‘high’ for ’76 hours’. You’ll be lucky to get 10 hours on high and 20 hours on low. Too bad UK does false advertising like this. They are a good company. But advertisers usually spec in the ‘moonlight’ mode.