Apparently the Knights of the Grip was organized in Michigan, USA prior to 1888 as an association of traveling salesmen. It is not listed in Stevens. It appears to be still in existence in the USA as a charitable organization.
The Canadian organization is referenced in an 1899 Oct 16 article in the Ottawa Journal, and a 1918 reference in the Kingston city directory. Beyond that, nothing is known about this organization.
Cdn O K of the Grip
4 Kingston Commandery Kingston <1918>
References:
https://www.manisteenews.com/local-history/article/The-Knights-of-the-Grip-14266076.php