I don't think any broker would, but they would allow SPDL to be part of your portfolio. The SPDL portion would not be marginable and in the case of a margin call, the non marginable portion of your portfolio benefits you much more than selling the same amount of a marginable stock.
I agree, just did not know if there was anything public about that contingency. It is nice to know that something is in the works. If they have the model right and the market agrees, I hope we get north of $2 before being take out.