Purchase Request Line Level Approval - Different Workflow Rules per Company

Our Sage X3 installation have 23 companies. Some are farming companies, others property companies and also financial / management companies.

Some companies have different approval rules requirements than others e.g.

Group 1:

Request site, product category, dimension 4

Group 2:

Request site, product category, dimension 4, dimension 8

Group 3:

Request site, product category, dimension 2

I know its possible to setup different user rule of assignment, but will it do any harm to setup different workflow rules, meaning make a copy of PSDSIG e.g.

PSDSIG01, PSDSIG02 and PSDSIG03 

and link different assignment rules to it.