Couple of things, first, I don't know that the maple board Jems, and UV777GR ever had clear on them, I thought that they were just wood.
Second, the clear on a fretboard will change the feel, tone won't change significantly enough to notice
This has been an ongoing debate time and again, how much difference does the wood of the fretboard make in tone, well, I'm here to tell you, probably not enough for anyone to notice it. Here is why I say this.
Yes, a guitar with a maple board might sound different than a guitar with a rosewood board, but it's more likely got to do with EVERYTHING EXCEPT the fretboard.
What makes me think that? well......
I have taken rosewood board necks off of guitars that I play, replaced with ebony or maple, no tonal change, replaced maple with ebony, no change, replaced maple with rosewood, no change. The feel is different, the tonal variation if there is ANY is sooooooooo slight, it would take the absolute best ears in the world to hear it.
Something as simple as a card shim to change your neck angle has more tonal effect on your neck than the fretboard does. this is because with a card shim, you've now lessened the area of neck to body contact, you have 2 small points rather than one large point.
Body wood makes a big change, if you were to make a mahogany neck instead of a maple neck, that would affect it. But we are talking a piece of wood that is 1/4" thick, GLUED to a maple neck, with a cavity routed down the middle. I'm sure if you had some kind of electronic tester that could pick up sound waves you'd see a slight variation, but that can even be caused by something as simple as the glue bond between the fretboard and neck.
I honestly believe, that if you took 3 identical guitars, all with cleared fretboards so you couldn't feel the difference, one with rosewood, one with ebony, one with maple, and blindfolded a person, then handed them each guitar, they couldn't tell you which guitar had what fretboard, even if you let them play them without the blindfold, and then blindfolded them to ask.
I'm not saying this to be a jerk, it's just that it's something I've wondered about too, until I started putting new fretboards on guitars, the tone change is un-noticable. The type of fretwire you use is more likely to change your tone, for example, a tall narrow fret will allow the string to vibrate more openly than a wide fret that chokes the string a little bit. A tall fret sounds brighter than a very small fret, as the string never comes in contact with the fretboard (Unless you play with a death grip)
Anyway, it's just my $.02, take it or leave it, but I can tell you one thing, if you have a guitar with a fretboard you don't like, but you love the tone, don't be so scared about doctoring the tone by putting a different fretboard on it, any change in tone you hear will more than likely be subconcious only.