Further to what we have eye-opened for the last time, I have found out what this crucial saver is and how much does it cost as well as other details about it! See two of the numerous of this same OEM product links below:-
http://www.aliexpress.com/store/701997/210990582-445388175/LCD-viewfinder-x2-8-for-Canon-EOS-5D-II-7D-500D-S90-50D.html
http://www.dinodirect.com/canon-led-viewfinder-extender-v1-5dii-7d-500d.html
Well, at roughly about (US)$20 additional cost, one of the major in-born design deficiencies of the K-01 is eliminated! :-o So, this is highly recommended! If you're planning to buy a K-01, just don't forget also to order this one! It is also learnt that the K-01 will be made even bigger and look "more professional", yet another big bonus advantage! ;-D