Based on my experiments, it does not matter if inside or outside, the potential for tangle does exist. As I do not have a Paketa, I have not done an inside RSD. However, I would anticipate a tangle potential when shifting chainrings while in the more extreme inner cogs especially if you are using a small granny right next to a fat 130bcd Gates timing ring and belt.

IMO, the outside RSD is actually less prone to issues and does not require a proprietary frame. It does however require enough space between the middle-mounted big ring and crank arm to insert that fat gates belt/ring with sufficient clearances on either side. The FSA SL-K Light cranks worked out great for this setup, but it is unknown about the others. Given the weight I posted above, you can see my FSA SL-K Light single bike RSD setup is actually no lighter than a regular set of FSA SL-K Light crossover tandem cranks, but I did achieve the narrower Q-factor we needed, so our setup is justified in that aspect.