Structural and civil engineers are perhaps bit better equipt to direct their services to other things such as industrial type projects that Architects are not involved in. Commercial interior people are probably busy with TI work, if no new buildings are going up, and there is an over abundance of empty existing buildings, firms that specialize in corporate interiors have an advantage. and so on and so on...

golden - i think you're largely hearing anecdotal evidence. every structural engineer we work with was cut back to the bone and a couple went under over the past few years. they, civil engineers, landscape architects - all of them were hit as hard or harder than most architects.

if there's the perception of more ads right now, i'd think it was due to the fact that their networks aren't usually as deep as most architecture firms. meaning, architects may not be advertising the jobs they are hiring for (and many are hiring, even if it's quietly). they may be finding talent through internal networks and channels. for example, i know that one (formerly) very large firm in atlanta has added about 50 positions over the last year. not a single one was advertised that i can tell. people who were hired knew someone or just happened to have great timing with submitting a resume. 

don't be fooled though -the whole industry was incredibly hard hit. yes, individual firms and people came out fine, but overall i just don't see any direct evidence to say that we've been getting hit harder than everyone else.