And you still can. Consider that with the financial threat looming, lost revenue due
to the necessary shutdowns, and the OSRAM announcement, ALL the Sylvania and remaining OSRAM bulbs are going to plummet in price. There are big savings to be had in their bulbs, which will more than make up for the cost of an additional HE hub. Don't expect the price of HE hubs themselves to plummet though. The HE team already works remotely and is prepared for this scenario by nature of their existing structure.
Experts like @mike.maxwell whom is the person that writes the drivers for the HE platform and really understands this, already use a separate hub for Sylvania/OSRAM bulbs to keep them off his main Zigbee network and has perfect results. Connecting HE hubs together is cost effective, efficient and easy. You can have a hub dedicated to affordable Zigbee bulbs, and the rest of your Zigbee devices (non-bulbs) can live on the main hub, unencumbered by bulbs that keep dropping the metaphorical Zigbee ball. 
Hue is certainly a good option, especially if you already own their bridge. The HE Hue Integration is very reliable. Depending on the light types you need, the prices aren't horrible. I have mostly their A19 bulbs in my house which were on average $14 CAD per bulb, and a few deals for much less. Hue BR30 bulbs are outrageously priced. Nice bulbs though, one must admit.
