Comsol or Simscape for electrical volume conduction models

Hello all,

   Im interested in developing a volume model of a relatively complex shape (think of a spiralling snail shell). Within this volume there are going to be spread around some point sources of electrical current injection.

What interests me is the spread of the electrical charge and hence the electric potential developed at different points within the volume caused by the injection of current from the sources located in this volume model.

Without doing extensive research on ways to do this computationally I realise that COMSOL is one of the standards used. This creates two problems for me. First I need to pass a learning curve for using COMSOL and second COMSOL doesn't suport GPU interface to speed up code. I already have a rather big model in MATLAB and this volume model will be a part of it so I would prefer to use Matlab to perform this. So I ended up looking into Simscape.

Now my questions are: Can Simscape support PhysicsProsesingUnits or GPUs to speed up code evaluation? Can Simscape evaluate this electrical volume conduction model? How does Simscape compare to COMSOL (precision-wise and operation-wise)?

Thank you for reading this, Andreas.