Since no one has stripped TIPS yet, this instrument doesn't exist.
Actually, todays's announcement PDF says: "The securities being offered
today are eligible for the STRIPS program". I have no idea how one
can actually purchase these.
So, in theory, I suppose the lower coupon TIPS with the same YTM will leave you with less coupon reinvestment risk.
My point. The problem I see with reinvesting the coupon payments
is that they'll be perhaps $300-500 every 6 months (for the amount
I'm thinking to invest) so it's dubious I'd invest each one in something
good right away, and if I did the $10 or so commission would be an
issue.
Furthermore, the 2.375% coupon TIPS doesn't have a full 10 years left until maturity, so you still face that re-investment risk.
Ok, it's 9.5 years instead of 10 years.