Tom,
While I can't answer for Skylark owners, (club members like Hollis, Glocke, 1stbass, etc.), I can comment as to scale length. Remember, these are highly subjective comments and do not necessarily reflect the opinions of others.
I am a long-time Fender Stratocaster player (I also have two Charvel/Jacksons of the same 25.5 scale length) and a Gibson Les Paul player. You must be a Fender player to pick 25.5 vs. Gibson's 24.75. It all depends on feel and taste. The shorter scale length offers reduced string tension, shorter reach from fret-to-fret and sweet-sounding highs. It also means somewhat muddy bass and chord voicings and less room to move for those with big hands. The longer scale offers more distinct bass, highs and chords with more room to move around, but is less sweet sounding and offers higher string tension. Of course variables like construction (neck-through, set-neck or bolt-on, neck/body shape, etc.), body/neck/fingerboards, pick-up type/construction/materials, etc. also have an effect on the tone/playability.
I have found that despite all the variables I just mentioned, the scale length (to me) has the greatest effect on tone and playability. For example, I play with std. nickel roundwound .009's on my 24.75 scale guitars, but can play with .010's on my 25.5 scale with the approx. the same string tension. The heavier gauge of strings you can stand to play, the better (fuller) your tone will be. In addition, regardless of wood, construction, pick-ups, etc., the longer scale instruments have that inherent Strat sound, while the shorter scale instruments have that LP sound that shines through no matter what.
OK, that's my $0.02 FWIW. Skylark Alembicians, now's your chance to chime in, LOL!
BTW, do yourself a favor and go with a better dealer like Steve Frank at Superbass.net or Gard or Beaver Felton over at Bass Central. You'll be rewarded with awesome customer service and great pricing. You won't be sorry. I can't say the same about Mr. Roman, LOL!