Is it just me or does there seem to be a lack of accessories for the Microsoft tablets? Is this because vendors don't think they will be popular or perhaps the demand for cases etc. is lower because pretty much every owner buys a type/touch cover so the need for a case isn't as critical? I'm hoping that MS opens up the "Accessory Spine" to other vendors. I'd love to see a type keyboard with an integrated pen holder. I'd also be interested in an external battery.