Yeah, I did commercial work and I did some catalog stuff on occasion and from my experience only the client can tell you what they have in mind for their catalog. Most catalog producers have graphic designers to do the catalog design well before the photograpy stage and have well th ought out designs. It's up to them to let yo know what they want. If they don't know, then sit down with them and go over various design concepts.
The samples yo showed copld well be what they want, but if they can offer no guidance, I would be very nervous.
Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.