Depending on what I'm doing,
I'll at least help out with layout if not do the
whole thing myself. Usually, I will use Cadence
for circuit schematic simulation and performing
the layout. Every now and then I'll get into ADS
for the same task, but this is on a rare occasion.
At most of the companies I have worked for
there are dedicated groups for performing layout.
I may be fortunate in my experiences though, because
the majority of the managers and even some of the
layout engineers were ex-designers and knew everything
fairly well and were willing to make changes as
they had the background.
For PCB design,
I have only ever used Protel.
I know exactly
what you mean when you say learning a lot of tools
is difficult. It has taken me many years to get
used to doing layout in Cadence, and then having
to learn how to do board layout on Protel is another
challenge in itself.