That disclosure form is about honesty, not commitment: it tells you whether the person showing you the house works for you, for the seller, or for both under limited dual representation, before you say anything that could affect your negotiating position.
A full buyer brokerage agreement, the document that spells out how long an agent works for you and how their commission is handled, is a separate step and its terms are negotiable. Nothing about Saskatchewan practice requires you to sign one before you have even seen a home.
Joel Dyck explains exactly what each form does and when before a buyer signs anything, including how it differs from the $800 to $1,500 a lawyer later charges to close the file. Get your hand-reviewed valuation from Joel Dyck.