I did use the bail out gear, but I stopped because it felt "harder" to maintain cadence than it does with the 39/25. I feel more comfortable with the 39/25 than the 30/25. Odd? I think so, but I can keep a more equal cadence with the 39/25 than the 30/25. It may change with the new wheel I had to get yesterday.
The bike already feels lighter in the rear. I know because I carried it 3 miles this morning. With the old wheel my should would have been hurting really quick from the frame digging into my shoulder.
My other thread about rims blowing out. Has become Shakespearian. Part comedy, part tragedy.