Having never heard the Fried, I can't say whether or not they sound similar to the ML. I can say, however, that simply following the same design philosophy is no guarantee that the performance will be simiar, or even as good. There are many transmission line based speakers out there. That doesn't mean they all perform equally well...even at a given price point.
That is akin to saying that SS amp 1 will perform like SS amp 2......simply because they are both solid state.
I'd say it's the other way around - McGinty followed Fried.

ML used TL's, used drivers that are similar in many ways, used 1st-order filters, are time aligned, and Pat also relied upon the step response when designing. I read
http://www.meadowlarkaudio.com/Dbench.htm and also
http://www.meadowlarkaudio.com/TC1.htm Subtract the mystical foofaraw and I know right where he's coming from.
I would expect to hear similar things, and indeed I did when I heard a pair of Kestrel 2s. The bass wasn't as tight, and the highs a bit harsher, but the same feeling of hearing the dynamics in the music was there. They sounded almost as good on solo piano as Fried's, and that's pretty rare IME. I would expect Roy Johnson's speakers to also have some of the same characteristics too.
I would have considered purchasing a pair of Meadowlark speakers, but by the time I learned of his company and had decided to investigate things, Pat had disappeared. I got a very good deal on other speakers, so I bought those instead. Oh well.

The cabinetry in MLs is much nicer (some of the nicest I've seen), but that's why they cost so much more. I appreciate the looks, but I might prefer to spend my money elsewhere and get good cabinets instead of superlative ones. (It's the music that counts.)