I am catching up on this one (having been away walking in North Wales for 5 days) so have read the discussion so far all in one go, rather than over several days as it was written. The thread appears to be going in the direction that forum discussions do from time to time, where positions become entrenched and people start arguing their corner, rather than discussing the topic.
Could it be possible that some people like the Kell guide and others prefer the Veritas or Eclipse? People have these preferences on most other tools, so liking one honing guide or another (or none) is equally valid. There's a lot of very well informed opinion on this forum, and I always feel a bit disappointed when that gets Eclipsed (pun intended) by bickering and partisan posturing.
Anyway, enough of me on my moral high horse.
In my opinion the making of wedges and spacers and the use of bits of paper to get the Kell guide to do all the required jobs suggests that it is only half a system. The Veritas product looks to do all the required things (with the add ons purchased admittedly) out of the box. I should say I don't own and have never used either of these, managing to stumble along with a combination of a £10 Eclipse guide and a bit of freehand when feeling dextrous.
My angle on these things, and all tools, is that if you like it and can afford it then by all means go for it. Bear in mind though, if you're always looking for the new new thing, chances are you will jump from pillar to post ad infinitum. Apparently now diamond stones are out and scary sharp is in...well I tried scary sharp 10 years ago and didn't get on with sticking bits of paper onto glass, so I'll be keeping my diamond stones. My point on this being that you need to go with what you find works, not just what eveyone else is doing.
Cheers, Ed