If a customer is paying for custom tuning and they want a lope tune, a smoke tune, a puff of smoke on start-up, or any other non-performance or vanity feature it is their truck and their choice. A valet, high idle, or no-start tune is certainly not a "performance tune" but there are customers who want them.
If a lope tune has your drivetrain clanking you need to change it or check over your drivetrain - you probably have a bad u-joint. I have heard so many "I heard it's hard on ________" comments it's not funny; if you read the internet enough it will bend your rods, crack your pistons, break your crank, blow apart your turbo and converter, twist driveshafts, snap u-joints, and your injectors will implode.... :spit: I have hundreds of trucks that lope on one tune that have never had any of those problems. For the record you can make any 01-10 lope on just one position of a DSP5 switch and the lope on the LMM actually sounds the best IMO - it is more irregular like a cam'd gasser would be; the LBZ is next and still has an irregular, natural sound; then the older trucks which often get into to much of a steady rythme to where it doesn't sound natural.
Bottom line, it is your truck - if you think a lope tune is cool and want one go for it, if you want a high idle tune to warm it up in the winter have at it. If you want custom tunes that are actually "made to the specifications of an individual customer" find a tuner who will listen to you and write you the tunes you want, otherwise you are getting predetermined tunes loaded on with EFI Live.