Spiro... mmm.... chemically minty...
I haven't dared keep it in my mouth longer than it takes for me to swallow the horse pill. I suspect that it has about 30 seconds of tolerable taste then it'll go really bad. In any case, it's not going to work any better sublingually anyway.
lecoeurdegrey, congratulations on getting underway on HRT. You're going to find it an interesting time, promise!