Looking for a force resistor, but I just want it to act like a switch
Actually you used to be able to. The appnotes for QTC sensor pills from Peratech ltd did suggest their use as (low current, 100mA or less) switches, since their resistance varied by about 7 orders of magnitude. They used to be available from Maplin (part N18BU) but apparently no more, except as part of their Smart Materials kit and a few other suppliers have remaining stocks.
Unfortunately they seem to have been EOLed so future supply may be difficult.
From the Peratech FAQ :

I have a custom requirement, what do I do?
Please use the Contact form to get in touch with us. We will review your requirements and advise the most appropriate next steps.
What happened to Elastomeric QTC and QTC Pills?
These are both legacy products no longer supported by Peratech.
Where can I find a data sheet for your standard products?
There are downloads available with each product in the Standard Products section.

So it may be worth looking at their newer standard products or contacting them for more information on custom products.