If you've worked in the service department surely you know the bikes are checked on a dyno, the oil is then drained and the filter changed. When the bikes are PDI'd, new oil is put in so the first service is in actual fact the second service.
This is a common misconception.. numerous bikes ive pulled out of the box already have fluids minus fuel in the bike and usually needs the battery filled and charged.. some models didnt as they was drained after start up.. but everything i know about the suzuki assembly line, and granted its not alot, does not include a "oil change" once the bike has been dyno'ed..
now im not saying this is the end all be all of the assembly line.. but given the bulletins and stuff working at the dealership nothing has ever been said that they changed the oil.. and that dyno run is not an all out run to the redline.. usually a 30, 50, 80 mph check and to warm up to make sure everything is runung right..
also these cats that are saying they have no issues with getting warrenty work done are probably right.. with none engine issues.. suzuki or any other dealership is not going to have a problem fixing a chain issue, or a fork issue, or a electrical issue becuase you didnt change your oil there.. but let that engine go out @ 7k and see if they dont question you service records.. do a search on here more then one thread about it and the problems they are having trying to get work done..
Im not saying you cant do it and you will lose the warrenty.. its not true you can do all the work yourself and keep your own records.. I WOULDNT.. i happen to know my tech that works on the bike... we ride together we go to bike nights and the track.. i trust him to do the right things..
When working at the dealership have i ever short cutted services before... yes and no.. all the proper services was done.. ie oil change chain adjust, carb sync, throttle body sync, cable adjustments, battery tests, coolant checks and the like... did i break out the torque wrench on every service .......... no.......... i didnt go over every nut and bolt with it grabed a 10, 12, 14mm wrench and made sure the stuff was tight.. sounds like some people need to get to know the techs around thier shop, and make sure its a reputiable shop at that... after my service i went over the bike checked everything out, but i know that if i have a major issue that they will fix it no questions asked with out a doubt in my mind there wont be a issue....... i promise if you do the work yourself, and just bring up your book saying you did the work.... there will be questions asked...