Let's deal with this straightforwardly.
You cannot use any Hub equipment on your VM connection that VM don't supply. If you get a Hub by buying it from the back of a barrow VM will refuse to activate it. And if you do buy a Hub 4 like this you will will be liable to prosecution for handling stolen goods. No one has the right to sell VM equipment like this and you should not be buying it either.
The only people that have a SH4 and who do not have the Gig1 service are those in areas or in cases where the service is congested and the SH4 has been deployed to help relieve that issue because it can take advantage of more channels than the SH3.
There is another point. For the moment the second generation of VM wifi pods are not available. They are out of stock. And there is also the issue that for a temporary period there is an issue preventing them from working with the SH4. VM are resolving this.
So all in all, you can't have what you want the way you plan to get it.
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