I hope there'll be no "eventually" about it, but that it's gonna be "immediately" instead. The lag in the video demonstration is pretty bad, but as you perhaps noticed, this was always related to opening a new window, etc.
So yes, I'm pretty sure there'll be some lag when it comes to displaying the course details. The important thing is for there to be no lag for the shot meter. When the guy was typing something into a Word document over the iPad, the letters appeared in the window instantly. I suppose (or hope) that the moving shot meter is a pretty trivial matter, in terms of graphics, to transfer from one screen to another, so I trust there'll be no game-disruptive lag for it or the related click.
Also, the guy said that the presence or lack of lag depends on the quality of Internet connection used. I'm on a very fast optical line, which could perhaps help.
(Anyway, buying LogMeIn for $30 is definitely a good investment for any iPad owner, even if the software should disappoint for WGT gameplay. Will update the WGTLS thread as soon as I actually try playing this game on the iPad.)
Now, the ideal way for WGT.com to resolve all this would be to move away from Flash altogether, and convert the game to something like HTML5, if that is possible at all, so that it can run natively on a mobile device such as the iPad. Flash is an awful technology, anyway, soon to be outdated, and I've always hated Flash-infested web sites. On the iPad, you can't even log in to these forums or reply to your PMs/Wall posts, because even the log-in window in these forums is Flash-embedded, and so it's nowhere to be found on the iPad, even though the forum posts, profile pages, tournament data, etc., all display properly.
If YouTube was successful in moving away from Flash completely, why not WGT.com?