Absolutely!! Good job Shannonman!! I thought this would be an easy question, as the very first thing you see as a WW1 British capital ship looms up on the horizon is a tripod mast but, i guess sometimes you never know!
SMS Blucher was indeed a 'ship built by mistake,' in that a clever misinformation campaign by the British fooled the Germans into believing HMS Invincible would be armed with 9" weapons, when of course it was actually equipped with 12" guns. 'Blucher' was first built with the then-standard German pole-mast arrangement, but was refitted in 1913 with the experimental tripod arrangement that was later installed on SMS Derflinger after Jutland, and also the BC Hindenburg and the Baden class of battleships as well.
SMS Blucher, although something of a failure as a battlecruiser, was quite an excellent model for the future family of 'heavy cruisers,' which largely replaced both the battlecruiser and armored cruiser after WW1 as a result of the various treaty conferences. In only one feature was Blucher lacking, and that was speed, a problem that could have been repaired at a later date through either conversion to turbines, or lengthining the hull (as was done to the Japanese 'Kongos'). Further, if the Germans had operated 'Blucher' as an armored, or heavy cruiser, or 'commerce destroyer' (she had quite 'long legs' with a range of close to 7,000 km)) rather than as a battlecruiser, it is quite possible she would have had a much longer and more successful career both as a prototype, and as a cruiser as well.......
And with that final note, the next question is yours Shannonman!