While it's true that this won't work with a Verizon iPhone 4S, it will work with any Verizon LTE-equipped phone (including the Verizon iPhone 5, 5S, and lots of Android smartphones). Verizon's 700 MHz C-Block LTE spectrum license requires that all its LTE devices be completely factory unlocked, and that its LTE SIM cards and their associated plans be interoperable between compatible equipment - tablets, smartphones, MiFis, jetpacks, everything (http://support.verizonwireless.com/support/faqs/VZAccess/4g_sim_card.html). This means you can take a data-only SIM out of a tablet, put it in a smartphone, and have access to that same data plan on your phone (see http://forums.macrumors.com/showthread.php?t=1465636 and https://medium.com/p/ce935d1aee5d). This is the same set of regulations that require Verizon not to restrict access to tethering apps on LTE devices, and which probably precipitated the inclusion of tethering in their mobile share plans (http://news.cnet.com/8301-1035_3-57485518-94/what-verizons-fcc-tethering-settlem ent-means-to-you-faq/).
A couple weeks ago, I called a local Verizon store to ask about trying this. They told me that in order to start a new data-only plan, they would only need the IMEI number of the device to be activated - not the device itself. However, since they can't start these plans out with a smartphone IMEI (due to their store computer system's limitations), you would need to activate the plan with the IMEI of a tablet or other LTE device first, and then transfer the SIM to your phone. So if you have access to an unused LTE tablet, this would be a pretty straightforward process. If you don't, another option would be to buy an iPad and activate your data plan using its IMEI (usually located next to the bar code on the outside of the box), and then return it to the store unopened for a refund.