It's really quite easy, and although the additives may be hard to come by, I highly recommend this method. At 3 weeks my mead tasted better than my friends mead that had been aging for 1 year. At 4 weeks it dropped completely clear. Tastes great too.
One thing to keep in mind is the terminal gravity and desired sweetness. For example:
If your OG is 1.100, good chance it'll finish at 1.000 and 12.8%, it's a dry mead. You might not like that at all.
If your OG is 1.150, good chance it'll finish around 1.040, a sweet mead, and around 15% alcohol.
This of course depends on what yeast you use as well. The main reason to make a BOMM is it's fast and good- traditional methods take longer and are less consistent.
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My 2nd batch I have some aging on blackberries, and some aging on freestone peaches right now.