Long time Altium user, first time caller.
Maybe tips for coping is the right phrase... Started a new job last year with an employer who uses Cadence Allegro EDM, (which BTW appears vastly different from OrCAD). Central library managed by an internal team, I can't add parts myself, interface was entirely new to me. I trudged my way through schematic entry, then had to (thankfully able to) hurl the design over the wall for packaging. Couldn't be more glad to be done with that project, which says a lot, because PCB layout is usually the most "fun" (you're still working afterall) part.
I hate the Cadence environment, absolutely hate it. I found out they also have licenses of Capture (CIS?) which seems more in line with OrCAD I used at uni some ten years ago - problem is that it's still the absolutely terrible, clunky interface I remember from ten years ago.

I'm so much more efficient in Altium, having used it since Protel 2004. Ultimately though this is the real world and this is how it goes, you suck it up, you learn the new tool. Still, I couldn't help but vent somewhere that may (just may) have some sympathy.
Anyone else faced a similar situation in their careers? Employer offered to pay for some crash-course training, so that much at least i'm excited about. A smaller group of us guys doing more rapid prototyping have talked about another tool, but for what the company pays for Cadence, not so sure that's going to fly well. Glimmer of hope perhaps.