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The field induced quantum phase transitions in the disorder-free anddisordered samples of the spin ladder material (CH_3)_2CHNH_3Cu(Cl_{1-x}Br_x)_3are studied using magnetic calorimetry and magnetic neutron diffraction onsingle crystal samples. Drastically different critical indexes and correlationlengths in the high field phase are found for two different orientations of theapplied field. It is argued that for a field applied along the crystallographicc axis, as in previous studies [1], the transition is best described as anIsing transition in random field and anisotropy, rather than as a magnetic BoseGlass to Bose Condensate transition.  [1] Tao Hong, A. Zheludev, H. Manaka, and L.- P. Regnault, Phys. Rev. B 81,060410 (2010).

Field-induced ordering in a random-bond quantum spin ladder compound with weak anisotropy