The short answer is - YES -
But, you need to understand the length of service, and the potential restrictions of the portable. I use an XPR-6500 all the time for my on-site Hotel demos.
The two issues are batteries, running a radio in the charger is not a good idea, and as the battery goes down so goes the connectivity. The second issue, and not as large is that the 2.5 support for inbound 280 char transactions is only avilable on the Gen 2 radios. But this only applies if you need inbound transaction GT 140 characters.
But if you are buying, you might as well get a XPR-4300 / 5300 verses a portable.
PS: You might try a battery eliminator, but I am not aware of one for the XPR series, although there must be one around.
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