I see that the D7100 is promoted as being weather sealed, but none of the affordable DX lenses are promoted as such. However anecdotes suggest that lenses such as the 18-140 which have a rubber gasket on the mount don't seem to experience any problems in wet weather within reasonable limits.
What are your views on this? Is a bit of occassional moderate rain okay for these consumer grade lenses or are we expected to spend $2k+ on a pro lens in order to take advantage of the D7100's weather sealing? Yes, I know rain covers are readily available but I find them awkward and clumsy.