There are three fundamental areas to consider in deciding whether your company is ready for a Business Relationship Manager (BRM) role:

1) Your motivation as an IT leader
2) Business partner and IT Organisation Maturity
3) Skills of the BRM required and existing skills within the current organisation

3) Skills of the BRM required and existing skills within the current organisation

The journey you, your IT team and the company you work for is unique. There may have been a recent reorganisation, merger or acquisition. Perhaps the company is embarking on offering a new service in a new market. Alternatively there is pressure to reduce costs and increase efficiencies. The point is there is change, and more than likely it's the same people who you'll be turning to figure out how and then do it - in addition to their "day" jobs. Questions to consider:

1. Think of a successful project, specifically one that required cross functional working in any organisation you've worked. What was the story in making it a success? What were the driving forces behind it? Who stepped up to the mark? Describe the culture and teamwork that made it work. What skills and capabilties were present?
2. Now contrast that to your current environment. What's needed? What areas do you think are missing?
3. Now contrast that to what a BRM role can potentially offer:

Is there "space" for the BRM role? Are elements of it already in existence in the organisation? And how well are the skills deployed, coordinated and intergated?