I really don't. I know you mentioned before that John Louis did that, and I think I remember someone (maybe you) saying that Ben Pridmore rested his for 6 months before using it in competition. I guess I've never really given it a chance, but I find it hard to believe that such a long rest can really help all that much. I'm more concerned that lack of familiarity might hurt rather than help.
Hey Mike,
I guess it will depend on the person, especially after you had done so well at Virginia having used those journeys so recently! At Chattahoochee 2009 I had rested my 4x4x4 BLD journey for 5 months (I hadn't used it since Decatur 2008, which was my most recent competition previous).
For me the stickiness factor on a rested journey is tremendous. If you look at my 3x3x3 BLD times in official competition compared to the in the forum competitions, you will see the biggest difference. I only use my competition 3x3x3 journeys in competition (hur!), so they are always rested since the last competition. The journeys I use in the forum are my practice journeys, and it's very likely that I would have used the same locations earlier that day or the previous day.
To cut a long story short, I need
significantly less review on an extremely well rested journey, compared to one that I have used very recently.
Chris, 3 months sound extremely long to me. However, you have amazing results. Do you at least vizualize them (those journey) during those months? By the way, what do you wait for getting into multi? Don't you want another world record?
3 months for me is actually only a short time, I prefer closer to 6 months

To answer your question though, yes I do visualize the journey itself frequently. It is part of my practice whenever I rehearse my images - I also rehearse any journeys I am resting. By rehearse I simply mean imagining each location, and also remembering which piece type goes in that location (my locations are piece specific).
As for multi, I almost feel bad to admit this seeing as how so many people are so passionate about it, but it just does not interest me to the same degree that single BLD does. I'm sure part of it also has to do with the fact that BH edges is not exactly the best bet for 3x3x3 edges right now. Daniel is working on some new awesome stuff to fix this actually! However, as it stands now BH edges is not a top tier method for 3x3x3. BH corners I would argue are difficult to be beaten by even freestyle (though I'm sure Haiyan would smash both Daniel and I in a 3x3x3 corner BLD heads up race).
I would much rather spend my time memorizing a 5x5x5 than four 3x3x3's for a multi (which would be almost exactly identical in terms of memorization amount for me). I don't know why, the thrill of solving a 5x5x5 is much more intense for me than the thrill of completing a multi attempt. I can't explain why, I wish I could.
Chris