No, I just think we have different views on it. I have zero attachment to my skills or experience, if a better mousetrap comes along, I'm going to be skeptical, but go with it if I think it's the future. We're also in different positions. I've been here for over two years now, drilled our engineers on everything possible, sharpened thousands of skates on the Sparx... All the questions and doubts you have (and everyone else has when first seeing it), I had.
It's quite possible that once you got your hands on it, we might have a similar views on it.
My biggest issue with Sparx has been the height restrictions. Simply put, if you have banana blades and your steel is worn down to the plastic holder, you're not going to be able to get the whole blade. As a retailer, I'd want to be able to hit those spots to make my customers happy, since a lot of them don't care to get new steel and are happy with what they have. Nowadays, I'm pretty comfortable with it. I think, if someone buys a Sparx, they're obviously concerned with their blades and buying new steel is a pretty easy conversation to have. If you have worn down steel and you don't care about it, then there's a good chance you're not in the market to buy an in-home sharpener anyways. That's how I've rationalized it in my mind. And another point on this too, if we allowed the average consumer to be able to sharpen that high, inevitably we'd have a ton of users setting their height too high and pushing the limits on how little steel they can skate with (better instructions would only help those who read them :)). As of right now, I'm really comfortable with where we are with the product and wouldn't change much (maybe make that Grinding Ring returning home part a little faster as someone already pointed out).
Shoot me a message with your address and I'll send you a demo unit with a couple Grinding Rings for you to mess around with. You keep mentioning you haven't seen one yet, we should fix that.