Yeah, I'm the same Mike. been using Minefield exclusively for a while. I wonder what will happen when 4 finally comes out of beta. I presume that it will come in x86 & x64 flavours.
Will there still be a Minefield? Minefield has been around for years. I tried it first over a year ago but it wasn't very useable until Adobe bought out the "square" flash.
Maybe it'll just become x64 Firefox 4.