I've just been out for a short (1.5 miles) ride around the local woodland (Chorlton meadows for those that know). It's gravel tracks with no lighting and enough tree cover to make it very dark.
This light is very, very good.
It spools up to full brightness at ~4mph by my speedo and the standlight stays on long enough for me to park the bike round the back, walk round to unlock the door, go in, take my shoes off, remove several layers, unlock the back door, hang the bike up, pour a glass of wine and start typing about 5 minutes.
It has a much longer throw than the Ixon IQ Speed that I also have on this bike (see piccies above). The beam is wider (with some slightly strange straggly patterns on both sides) and it starts much nearer to the front wheel than the Ixon despite me setting it (the Philips) to light as far ahead as possible.
When I had both lights illuminated, the IQ didn't bring any benefits- it gave a splash of bright light that dropped my focus nearer to the bike. It took some concentration to keep looking over the bright spot.
Compared to the Supernova E3 symmetrical on my other bike, it doesn't illuminate as far ahead (this is based on memory rather than a direct comparison) but it certainly puts more light out near to the bike (and for some way ahead of it as well). The IQ Speed brings more to the party when it's used with the Supernova.
I'm seriously considering putting the Philips onto my Enigma.
An ideal combination would be the Philips and the Supernova together, in the same way as the old Schmidt halogen set:- spread beam and longer throw beam.