Comparing the beam to that of a 2008 model Ayup, it's very similar. The beam angle is a bit wider than the Ayup "intermediate", and the colour temperature a bit warmer. Overall light volume was at least equal to the '08 Ayup. The wider angle and more 'spill' would probably make it better in tight singletrack, but perhaps the 'throw' in terms of ultimate distance was not as good on straight roads. Overall, happy with light output. (On high of course. Low will be used for extending battery life only.)
Light mounting to the bars is dead simple and no cable ties required. However it has to be mounted to one side or other of the stem, meaning it's not necessarily pointing dead straight ahead depending on your bars (unlike the Ayup which straddles the stem and is therefore dead straight - requires cable ties etc though).
Helmet mounting is poor compared ot the Ayup "gecko" system. Cable ties etc are the go to make it work. However it does come with a head harness that makes it easy to use without a helmet. Good as an uber walking/campsite light I guess if you want to scare dropbears away.
Battery mounting is awkward for both bar & helmet applications. No velcro or other means of attaching the battery to the bike or helmet is supplied. The battery pouch does have a belt clip but that's not very useful for cyclists. On the up side, the 1m power lead extension cord makes it easy to stuff the battery in a jersey pocket or whatever. I will be using the velcro straps from my Ayup set - or it's dead easy to make new ones for a couple of dollars from BigW/Kmart etc.
Overall - light performance on a par, a small amount of hassle, but a huge amount of value...