Quote:
Originally Posted by
Kashiwa 
Thanks. Glad to hear your happy with the water resistance of the "reverse chamois". Just for clarification, the photo I originally posted was of an oiled chamois LWB. I'm not sure if reverse chamois and chamois offer the same degree of water resistance?
Any other thoughts on the water resistance of chamois, reverse chamois and Kudu?
Chamois LWB

Reverse Chamois WT Boot

Kudu LWB

Well according to the Horween blog Kudu is a type of Chromexcel:
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Aniline Chromexcel WP – the classic, hot stuffed pull-up leather
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Beaufort Chromexcel – the same as the above, but with a different oil/wax blend. Designed to be cementable due to less oil.
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Wooly Chromexcel – receives a different stuffing blend with a heavy addition of wool grease (lanolin)
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Plainsman Chromexcel – A duller version with a more pronounced grain character
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Kudu Chromexcel – Plainsman that has been hand-curried (oiled by hand)
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Cavalier Chromexcel – Similar to Beaufort, with a lighter colored base tannage, allowing us to produce brighter colors.
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Huntsman – a.k.a. Waxed Flesh, this version is finished on the flesh side, give it a slicked-down-suede look
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Casual Chromexcel – A mellow (softer) version with less pull-up
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Stampede Chromexcel – Chromexcel with a matte, nubuck finish
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Marine Field Shoe – A natural, flesh out version tanned for the use in boots during WWII (North African Theater)
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Natural M’s Chromexcel – A heavy, mechanical leather used for oil seals
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Glace Chromexcel – A version with a high gloss finish
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Vintage Chromexcel – softer with a slightly pre-aged look
From the comments section here:
http://horween.wordpress.com/2010/03/23/chromexcel%c2%ae-2/
This comment is close to the bottom and is dated
April 24, 2012 at 10:33 pm
So I have to assume that the Kudu would be fantastic in rain (Though not waterproof because the tongue is not attached) and should last a long time.
I think you are safe to go with what looks better.
Just about all of the above can be run on either cowhide or horsehide.