RVSM is a great idea, i`ve found that complying with the rod/roc requirements(max1500ftpm)climbing thro FL250 and the same until descent below FL280 a real pain, and in practice you have to start your descent earlier, and you get to your cruise later, so you use more fuel!! and it doesn`t leave an awfull long time for lunch!!!
Edited for typo
---ditto------
[This message has been edited by INKJET (edited 27 April 2001).]
[This message has been edited by INKJET (edited 27 April 2001).]