My question was more rhetorical: how much is the weight difference really going to be between the GS Rev. and the Phoenix? 0.02 oz?
This is all hypothetical for now.
But
https://www.youtube.com/watch?v=9LCIKcnkQjMand
https://www.facebook.com/pg/johnwilsonblades/postsboth say
quote]46% lighter than traditional blades, with a full carbon fibre body and stainless steel runner - it's the lightest blade ever made.[/quote]
I get that your question was rhetorical, nonetheless. I don't know how much lighter they claim Revolution are than traditional blades, but if you do, and the weight of your current blades, you can figure out approximately how much lighter.
Do you feel that the weight of a blade (even, traditional vs Revolution) significantly affects your skating?
Other people here have said the carbon body of the revolution blades makes for a softer landing (or something like that). I wonder if the same will hold true for Phoenix blades.
The lack of hollow grinding (presumably, on the sides, like a hollow ground knife) only affects weight, not the interaction with the ice, and maybe would make the runners very slightly less strong. So, aside from weight, which you are already considering, you can ignore hollow grinding.
But do you feel tapered blades work for you better? Conversely, some people say they prefer parabolic blades. And other people say the differences in shape are too small to actually make a difference, other than psychological. At one point, I believe Bill_S did some measurements, and found that such shaping didn't actually extend down to the working surfaces, so presumably can't make any difference. Do I have that right, Bill?
Anyway, I think what John Wilson is doing makes a lot of sense. The less information is available, the more interested people will be in finding it out. So minimal information is a form of advertising.