GNNs for partial charging are significantly more flexible and general than the RCT protocol described in this work, avoiding the need for a monomer-wise breakdown of a polymer altogether. RCT is not intended as a long-term competitor to such methods, but rather as a stepping stone between established legacy atom-type-based parameterization methods such as AM1-BCC and modern GNN molecular models. In addition, RCT permits validation of these models on classes of molecules such as non-canonical amino acid peptides and bioactive polymers which have not enjoyed the same extensive validation as small molecules and canonical proteins originally used to fit Amber and other legacy force fields. The differences in charges and shape properties between RCT and Espaloma-Charge indicates that GNN charges approaches may require some tuning. However, significant research is happening now, with further versions of Espaloma, 48 DASH, as well a near-release OpenFF version.