I'm prompted to write by this post by Jeff Dray over at Techrepublic on the subject of getting out and about once in a while - working temporarily in other (end-user) departments and locations.
My own experience is it can be very worthwhile, particularly if relations between the Helpdesk/Service Desk are a bit stained at times.
My own experience of this was after I'd taken over an IT Manager type-role at a Call Centre back in the 1990's. The sales team (i.e., those people actually taking orders and enquiries from customers, remember there were no Internet online shops back then) hated the IT group of 8 staff with a passion, and were not slow in showing this to anyone and everyone in the company who would listen. The sales order processing system I inherited worked after a fashion, but had a tendency to lose orders - not many, but enough to cause a steady stream of calls from customers saying 'where's my stuff?'.
The root of the problem was that they felt that their problems and issues were not taken seriously enough, and dealt with quickly enough. On the IT side, the IT team was constantly struggling to keep-up with a constant stream of new campaigns.
It was the sales team that suggested that members of the Service Desk be seconded onto the phones, and to be honest their mood was such I thought it was better not to say no - regardless of how busy we were.
Over the next few weeks each of us took a 3-day stint as a sales representative working on different campaigns.
As it turned out, the sales team were right - we didn't take their issues seriously enough, and we were not dealing with them quickly enough. The problem was that customers, not surprisingly, are not prepared to wait, get agitated and angry - and these had to be handled with the sales team, increasing stress levels all round. In many cases attention tomorrow was no use - it had to be today, often 'right now'.
The interesting thing was that members of IT coming back to their regular jobs invariably said something like 'we've got to do something' or 'no wonder they are always on the warpath', and had a lot of useful suggestions as to how we could improve things until the sales order processing system was replaced at the end of the year.
The extra insight allowed changes in attitude and working that had a quite positive improvement, despite the high pressure nature of the environment.