Let's say that there are couple of semiconductor manufactures, they accept BTC payment, then they need to use BTC to pay salary for employee and other costs, unless all that cost can be paied in BTC, some exchange is needed
But, they could have a deep saving account in local currency, so they just accumulate BTC in the process, while use the local currency saving to pay for the costs, this could be considered a benefit if the BTC price rise continuously, but then Avalon ASIC sale in BTC ensured this will happen
There are many levels of this kind of self improving feed back, as long as the price is rising
From recollection, although I can't find the post, I think BitSyncom was saying one of their major suppliers accepts BTC so I guess they're less vulnerable to market fluctuations than otherwise. But if there's also no reason, given they're using a payment provider (BitWallet I think) then I guess they can select, as with BitPay, the proportion of the payment they receive in Bitcoin and the proportion exchanged immediately to local currency.
I will admit to being mildly amused by the questioning on this forum of their wisdom in using BTC for payments.
The reasons they give may be familiar to some of us: ease and speed for international transfer and no chargebacks.