We report solution viscosities of poly(dimethylsiloxane) (PDMS) sodium and zinc ionomers with tailored number of monomers between ions and number of ions per chain in good and in Theta solvent conditions over a broad range of concentrations. We analyze our data in terms of three concentration regimes of viscosity predicted for associating polymers. The first is a sticky Rouse semidilute unentangled regime with mostly intermolecular associations and renormalized association lifetimes. The second is a sticky reptation semidilute entangled regime also with mostly intermolecular associations and renormalized association lifetimes. The third regime is observed when strands between ions arc entangled. For sodium ionomers with few ions per chain the power-law exponents observed experimentally in three predicted concentration regimes match the theoretical predictions. In the case of zinc ionomers with their divalent zinc ions, the power-law exponents do not match the exponents from theory. For ionomers with greater than 5-6 ions per chain, equilibration (dissolution) of dilute solutions is extremely slow and equilibration at higher polymer volume fractions to form physical networks is slow. At low polymer volume fractions, we find that zinc ionomers with fewer than three ions per chain behave as nonassociating polymers.