I'm not sure my body could handle being in a tucked position for 24 hrs (even if the rest of me could handle it) !!

I'd need to go a size down on a TT bike and have different bars (no room for clamp-on bars with my current setup), so that gear would be for whenever I could justify the cost for something I wouldn't use that often. I do well enough in TTs without the aero gear. I'm sure I'd do even better with it, but I'd rather have a backup "normal" bike.