IMHO the Open Pro is not the rim for touring or bad road commuting at any spoke count. The Open Pro is a light duty race rim or the ideal fast training rim for 23mm tires and a quick bike. Its popular because its light, has a welded seam and machined brake tracks.
Heavier riders, touring bikes and commuters need a stronger rim. Rims with a deeper cross section provide more radial strength and resist deflections better. Something like the Velocity Deep Vee's or Mavic CXP-33 is probably a better choice.
For those who asked, tires still mount easily on the Mavic CXP-33.
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