Thought I would give a long-term review of the Frameless top, as I had the original Viking version and used it almost exclusively for 3+ years on my TJ.
From what it looks like, Viking sold the design to Rampage (if you look on Viking's site now, they link to Rampage's site for the frameless soft top). Somewhere along the line, improvements were made to fit and finish. As I had the original version, I won't address fit and finish issues any more than to say I was fairly happy with the original and didn't have too much of an issue with either.
From a durability aspect, I have seen some comments about concern over wear and tear on the top because it sits directly on the soundbar. As an owner for over three years, I can tell you that I experienced no wear and tear there whatsoever. The top was very durable in that respect.
Another mentioned concern over the rear velcro straps being outside the top, and what effect the weather would have had on the strength of the hold of the velcro. I can also report that was not an area of concern, the velcro held strong throughout my entire experience with it.
Where I did experience problems was with the plastic buckles on those rear straps. Exposure to UV over the years had degraded the plastic to the point where the buckle broke when snugging down the top. This was not as much of a concern as you might expect, as I simply turned the buckle around and was still able to use the top. However, use caution when snugging down those rear straps and do not apply too much pressure.
I really did not have any other durability issues with the top. I LOVED it's functionality, the lack of wind noise, and frankly I think the top itself looked great.
The ability to fold the windows up into the top and carry them eliminated many concerns I had about freak rainstorms. I left the side windows zippered in, and just folded them up into the holding area. Then, I left my rear window attached and once I detached the rear bar, I just folded it back over the side windows. That way, all I ever had to do was throw back the rear cover, drop the windows and then zip the sides of the rear window down. I had the maneuver down to under three minutes going from safari to full top.
Taking the top all the way down was a little more involved, as the method for stuffing the seams above the doors into the factory door surrounds was a pain (double-fold over, then stuff). That was the design feature I liked least about the top. I don't know if more recent versions have addressed that issue.
If I had it all to do over again, I would not hesitate to get the current version of this top and make it my exclusive soft top for the TJ. The pros far outweighed the cons in my mind.
FWIW, here is a pic of my TJ from a 2007 Moab trip with the top on it:
And how I ran with it 90% of the time... safari configuration (2009 I think):