i agree that the proximity effect of, say, an U87 in
cardioid setting is
not usable in the same way than that of an sm58. for one, it would pop
like mad :)
but that's due to the size and sensitivity of the capsule, the built-in
foam (or lack thereof) and the robustness of the suspension.
if you take a directional condenser optimized for hand-held (neumann has
a veery nice hypercardioid, i forget the model number, or take some of
the offerings by beyerdynamic or sennheiser), you will find that it can
be used in much the same way than an sm58, although sibilance will
become a problem, simply because those mikes are way more linear in the
treble range and more sensitive. another downside of the neumann is that
it's quite prone to handling noises
The Neumann you mention is probably KMS105. I prefer dynamic mics for
live shows, current favourite being Sennheiser e845.