They are absolutely desirable to guys tired of looking for service on their tube type wheels. The 17.5" tubeless wheels are also generally safer than old multi-part wheels.
There were a variety of 17.5" applications having the 6 x 7.25" pattern, both single and dually, differing offsets and lug hole sizes, so we'd need more specifics about which you have. I help guys with wheel issues on a few different forums so can refer guys to you if you email me enough description to help me know what you have. Click on my user name for the email address. Stu