I have one of these:
http://cgi.ebay.com/SEIKO-AUTOMATIC-DESERT-STORM-AVIATOR-BLACK-WATCH-BAND_W0QQitemZ220568238864QQcmdZViewItemQQptZWristwatches?hash=item335ae43b10
It works well, and has the same movement as the Orange Monster.
I bought a brown buffalo pilot strap (with rivets) for my Hamilton Khaki X-wind from Steinhart.
http://www.steinhartwatches.de/index.php?id=67&Sel_ID=20&Sel_Cat_ID=1
They sell non-riveted straps, as well as good-quality sterile buckles (pre-v too).
When they sent it to me, they included a bar of Steinhart-branded chocolate, which was delicious.