Interesting. I wasn't aware that the data usages shows up differently in your account. My guess is that when you use the MHS app, the app itself actively makes Verizon aware that your phone is currently tethering, for them to keep track.
Originally Posted by upsidedown
The short answer to your first question is yes. By using freetether, your tethered data usage really shouldn't appear any differently to Verizon than it does when you're not tethered, so it should just show up under the general 'Data Usage' part of your account instead.
*Note that I'm not a Verizon user myself, so I can't vouch for what their exact limits are for things or how strict they are about them.
Generally though, you'll be ok with most carriers if you keep your data usage to about 2GB per month. If they've already been ok with 3GB through your free MHS up until now, then the same amount of usage, just allocated instead through your regular 'Data Usage' probably won't bother them (especially if you still have free MHS tethering as part of your plan since they expect higher overall data usage from you then anyway).