imo, you should just switch focus to K30. i find that its more versatile and its easier to hold. i like the K-01 as a concept but i didn't buy one cos i don't think it suits my needs
the K-01 is not exactly "small" - even with the 40XS, its not "pocket-able". it also has no viewfinder so you'll be using the rear LCD to compose and focus - not exactly an easy thing to do with a big camera and even less comfortable to use if u're pairing with a big lens like the high end DA*16-50 or the DA*50-135.
the K30 retains traditional DSLR ergonomics - you hold it close to your eye with your right hand and support the lens with your left hand - its a more natural posture for a camera bigger than a compact PNS.
and not to mention that it has 2 scroll dials so u can control both shutter and aperture easily when in M mode and it is WR - u'll probably enjoy using it more
the beauty of using pentax is the availability of high quality prime lenses - from the relatively affordable 50f1.8 and 35f2.4, to the high quality DA and FA Limited.
but for holidays, i strongly suggest u use a zoom like the 18-55 or 18-135. if budget allows, a fast zoom like the DA*16-50 or Tamron 17-50 is also very good - easier to use, less to pack. at most, just pack 1 more fast prime that u like to use for low light. its no fun packing a big camera bag and changing lenses all the time.